I want to do the very same thing. I would like to set up a Mandrake 9.1 box as an email gateway. I'm interested in using Mailscanner to filter our mail. I'm new to setting up an email server, having experence only with email clients (kmail, evolution, outlook and outlook express). I currently use Mandrake 9.1 as a file share server for a windose network. Our email server is located at the ISP, so a mail gateway is what I'd like to setup.